By the TC Golf Center Editorial Team ยท Updated
Forged irons are pressed into shape from a solid piece of steel, and cast irons are made by pouring molten steel into a mold. The process matters less than the shape of the head. Head design sets forgiveness and most of the feel. Buy the head shape that fits your ball striking. Treat forged or cast as a secondary detail.
Most forged irons are compact players models and most cast irons are larger cavity backs, which is why the two labels get confused with blades and cavity backs.
Forged vs Cast Irons: Side-by-Side Comparison
| Category | Forged | Cast |
|---|---|---|
| How it is made | A heated steel billet is pressed in dies, then machined and finished | Molten steel is poured into a ceramic mold made from a wax pattern |
| Typical steel | Soft carbon steel such as 1020 or 1025. Some heads use harder 8620. | 431 or 17-4 stainless steel |
| Feel | Often described as softer | Often described as firmer. Tests with matched heads found little or no difference. |
| Forgiveness | Usually lower, because most forged heads are compact | Usually higher, because casting allows deep cavities and undercuts |
| Loft and lie adjustment | Easiest to bend | Can be bent. 17-4 stainless takes more force than 431. |
| Price | Usually higher | Usually lower, with exceptions |
| Typical iron types | Blades and players cavity backs | Game-improvement and super game-improvement cavity backs, plus some players irons |
These are tendencies, and individual models are exceptions to each row.
How Are Forged Irons Made?
Forging starts with a solid billet of steel. Titleist describes the process this way: the billet is heated, placed in a tool, and pressed under very high pressure into the shape of the head. PING forged its original Blueprint iron in four steps, then machined the face and grooves.
Forging needs a relatively soft steel. Carbon steels such as 1020 and 1025 are the usual choices. The Mizuno Pro S-1 is forged from one piece of 1025E carbon steel. PING used a harder carbon steel, 8620, for the Blueprint.
How Are Cast Irons Made?
Cast irons are made by investment casting, also called lost wax casting. Hot wax is injected into a tool to make a wax copy of the head. The wax is dipped repeatedly in a ceramic slurry to build a hard shell. The wax is melted out, and molten steel is poured into the empty shell. Once the steel cools, the shell is broken off and the head is polished.
Titleist says most irons sold today are cast, typically from 431 or 17-4 stainless steel. The PING G440 is cast from 17-4. Liquid steel fills any shape the mold allows, so designers can add channels, ribs, and undercuts that are hard to produce by pressing solid metal.
Do Forged Irons Feel Softer?
The published evidence points to head shape and material more than to the forging process.
The most detailed account comes from Paul Wood, PING's vice president of engineering, in a 2015 article for GolfWRX. Wood wrote that much of what golfers call feel is the sound of the head at impact. He described three PING tests:
- Matched heads. PING made S59 6-irons in cast and forged versions with the same basic material and geometry. Fifteen PING tour staff players tried them. One correctly identified which was forged.
- The word on the club. PING took two identical S55 irons and etched "forged" on one. One in three players reported a softer feel from the club marked forged.
- Headphones. Players who hit shots wearing noise-cancelling headphones found it very difficult to tell clubs apart by feel.
Wood also cited a paper from the mechanical engineering department at Virginia Tech that compared a forged and a cast 5-iron of the same design. According to Wood, it found no real difference in sound or feel when material and geometry were similar. His explanation is that the sound of an iron depends on where the mass sits in the head. A muscle back vibrates differently from a perimeter-weighted cavity back, whichever way it was made.
Other sources reach similar conclusions. GolfTEC's Nick Miller wrote that feel comes almost entirely from the geometry of the club. MyGolfSpy attributes any difference a golfer notices to the softer 1025 steel used in many forgings, not to the process.
Companies known for forging take a different position. Titleist says forging squeezes porosity out of the steel and produces a dense grain structure, and it credits forged irons with exceptional feel and feedback.
PING built its name on cast irons, so weigh its tests accordingly. A forged blade and a cast cavity back feel different mainly because they are different shapes.
Are Forged Irons Harder to Hit?
Not because they are forged. Forgiveness comes from head shape. Weight moved to the heel, toe, and sole raises moment of inertia, which reduces twisting on off-center strikes. Our guide to golf iron anatomy explains those parts of the head.
Casting makes that weight placement easier. Titleist notes that forging is more limited in how weight can be distributed, so forged irons tend toward simpler blade shapes with smaller effective sweet spots. The Titleist T100 is a forged cavity back. A forged cavity back is generally more forgiving than a forged blade, and a compact cast players iron gives less help than a large cast game-improvement head.
Can Cast Irons Be Bent for Loft and Lie?
Yes. Ed Mitchell, founder of Mitchell Golf, which makes loft and lie machines, writes that most irons can be bent, including cast ones. The difference is effort. He lists 17-4 stainless at 34 to 38 on the Rockwell C scale and 431 at 18 to 25. Forged carbon steel is softer than both, at about 80 on the lower Rockwell B scale.
Mitchell says the common industry limit is 2 degrees. He applies that limit mainly to loft, because bending loft also changes the sole angle. He writes that lie can be bent 4 degrees or more when the hosel design and manufacturing process allow it. PING has fitted its cast irons to different lie angles through its color code chart since the 1970s.
Limits vary by model, so ask the manufacturer or a clubfitter before bending any iron.
Which Lasts Longer, Forged or Cast?
The differences come from the steel, not the process. Stainless steel resists rust without plating, and Titleist describes 431 and 17-4 as strong, durable alloys. MyGolfSpy notes that harder metal tends to be more durable, so grooves last longer.
Carbon steel rusts when bare, so forged carbon steel heads are usually plated. The Mizuno Pro S-1 has nickel chrome plating over a copper layer.
Are Forged Irons More Expensive?
Usually. Titleist says forging takes more time and labor than casting, which makes it more costly. At launch, the cast PING G440 was $170 per iron in steel. The forged Titleist T100 and Mizuno Pro S-1 were $215 per club.
Price follows the market segment as much as the process. Golf Digest listed PING's cast i240 players iron at $217 per club in steel at launch.
What About Irons With a Forged Face on a Cast Body?
Many current irons are neither fully forged nor fully cast. Titleist says manufacturers now join cast bodies to forged faces, and add tungsten weights, to combine high moment of inertia with the feel of a forged face. The TaylorMade P790 is a foam-filled hollow body with a forged face. The Titleist T350 pairs a forged face with a hollow body.
A "forged" stamp on one of these irons may refer to the face only. Our overview of golf iron types covers hollow body designs.
Which Should You Choose by Handicap?
- High handicaps and beginners. Choose by forgiveness. That usually means a cast head. See the best game-improvement irons.
- Mid handicaps. Either works. Compare the best cavity back irons.
- Low handicaps. Forged players cavity backs and blade irons are realistic options for consistent ball strikers. Cast players irons are also worth testing. Wood told Golf Digest in 2019 that PING's tour players do not care whether an iron is forged or cast.
The Bottom Line
Pick the head shape first. Choose a forged carbon steel head if you want a compact players iron or expect to adjust loft and lie often. Choose a cast head if you want the most forgiveness for the money. Our best golf irons guide lists forged and cast sets at each level.